426844271891 has 8 divisors (see below), whose sum is σ = 440681530368. Its totient is φ = 413011269000.

The previous prime is 426844271879. The next prime is 426844271947. The reversal of 426844271891 is 198172448624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426844271891 - 2²⁶ = 426777163027 is a prime.

It is a super-3 number, since 3×426844271891³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426844271801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859415 + ... + 1261856.

It is an arithmetic number, because the mean of its divisors is an integer number (55085191296).

Almost surely, 2^426844271891 is an apocalyptic number.

426844271891 is a deficient number, since it is larger than the sum of its proper divisors (13837258477).

426844271891 is a wasteful number, since it uses less digits than its factorization.

426844271891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127793.

The product of its digits is 6193152, while the sum is 56.

The spelling of 426844271891 in words is "four hundred twenty-six billion, eight hundred forty-four million, two hundred seventy-one thousand, eight hundred ninety-one".